ΔE 7.7, close: similar, with a visible difference side by side. Gray FS36231 is more muted, cooler than Dark Seagray.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Gray FS36231 is more muted, cooler than Dark Seagray.
The same difference applies the other way round: Dark Seagray is more saturated, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Dark Seagray on the colour wheel See Gray FS36231 on the colour wheel
All matches: Dark Seagray equivalents · Gray FS36231 equivalents